APT42 Uses AI-Assisted Phishing and TAMECAT Malware to Target Government and Defense Officials

APT42, an Iran-linked cyber espionage group, has expanded its phishing operations with AI-assisted research, convincing personas, and a more resilient version of its TAMECAT malware. The campaign has targeted senior government and defense officials, policy experts, and, in some cases, family members connected to high-value individuals. Rather than relying on large volumes of suspicious emails, the group builds trust through realistic invitations, extended conversations, and messages sent through personal email, corporate accounts, and WhatsApp. This approach makes familiar Iranian APT42 phishing group activity harder to spot before a victim clicks a link or opens a document. Analysts at DarkAtlas identified the latest...

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